Moving Inventory Cube to aDSO type inventory

I tried to load the initial stock of my HANA optimized inventory cube to the 7.5 inventory aDSO. For another inventory example with 13M records (all with date 31.12.9999, recordmode 1 (initial)) it worked like a charme.

In the other Business case (300M records, every record with 31.12.9999) I get an error due to time inconsistency.